| /***************************************************************************** |
| |
| Licensed to Accellera Systems Initiative Inc. (Accellera) under one or |
| more contributor license agreements. See the NOTICE file distributed |
| with this work for additional information regarding copyright ownership. |
| Accellera licenses this file to you under the Apache License, Version 2.0 |
| (the "License"); you may not use this file except in compliance with the |
| License. You may obtain a copy of the License at |
| |
| http://www.apache.org/licenses/LICENSE-2.0 |
| |
| Unless required by applicable law or agreed to in writing, software |
| distributed under the License is distributed on an "AS IS" BASIS, |
| WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or |
| implied. See the License for the specific language governing |
| permissions and limitations under the License. |
| |
| *****************************************************************************/ |
| |
| /***************************************************************************** |
| |
| sc_signal_rv.h -- The resolved vector signal class. |
| |
| Original Author: Martin Janssen, Synopsys, Inc., 2001-05-21 |
| |
| CHANGE LOG IS AT THE END OF THE FILE |
| *****************************************************************************/ |
| |
| #ifndef SC_SIGNAL_RV_H |
| #define SC_SIGNAL_RV_H |
| |
| #include "sysc/communication/sc_signal.h" |
| #include "sysc/datatypes/bit/sc_lv.h" |
| |
| namespace sc_core { |
| |
| class sc_process_b; |
| |
| |
| // ---------------------------------------------------------------------------- |
| // CLASS sc_lv_resolve<W> |
| // |
| // Resolution function for sc_dt::sc_lv<W>. |
| // ---------------------------------------------------------------------------- |
| |
| extern const sc_dt::sc_logic_value_t sc_logic_resolution_tbl[4][4]; |
| |
| |
| template <int W> |
| class sc_lv_resolve |
| { |
| public: |
| |
| // resolves sc_dt::sc_lv<W> values and returns the resolved value |
| static void resolve(sc_dt::sc_lv<W>&, const std::vector<sc_dt::sc_lv<W>*>&); |
| }; |
| |
| |
| // IIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII |
| |
| // resolves sc_dt::sc_lv<W> values and returns the resolved value |
| |
| template <int W> |
| inline |
| void |
| sc_lv_resolve<W>::resolve( sc_dt::sc_lv<W>& result_, |
| const std::vector<sc_dt::sc_lv<W>*>& values_ ) |
| { |
| int sz = values_.size(); |
| |
| assert( sz != 0 ); |
| |
| if( sz == 1 ) { |
| result_ = *values_[0]; |
| return; |
| } |
| |
| for( int j = result_.length() - 1; j >= 0; -- j ) { |
| sc_dt::sc_logic_value_t res = (*values_[0])[j].value(); |
| for( int i = sz - 1; i > 0 && res != 3; -- i ) { |
| res = sc_logic_resolution_tbl[res][(*values_[i])[j].value()]; |
| } |
| result_[j] = res; |
| } |
| } |
| |
| |
| // ---------------------------------------------------------------------------- |
| // CLASS : sc_signal_rv<W> |
| // |
| // The resolved vector signal class. |
| // ---------------------------------------------------------------------------- |
| |
| template <int W> |
| class sc_signal_rv |
| : public sc_signal<sc_dt::sc_lv<W>, SC_MANY_WRITERS> |
| { |
| public: |
| |
| // typedefs |
| |
| typedef sc_signal_rv<W> this_type; |
| typedef sc_signal<sc_dt::sc_lv<W>, SC_MANY_WRITERS> base_type; |
| typedef sc_dt::sc_lv<W> data_type; |
| |
| public: |
| |
| // constructors |
| |
| sc_signal_rv() |
| : base_type( sc_gen_unique_name( "signal_rv" ) ) |
| {} |
| |
| explicit sc_signal_rv( const char* name_ ) |
| : base_type( name_ ) |
| {} |
| |
| |
| // destructor |
| virtual ~sc_signal_rv(); |
| |
| |
| // interface methods |
| |
| virtual void register_port( sc_port_base&, const char* ) |
| {} |
| |
| |
| // write the new value |
| virtual void write( const data_type& ); |
| |
| |
| // other methods |
| |
| this_type& operator = ( const data_type& a ) |
| { write( a ); return *this; } |
| |
| this_type& operator = ( const this_type& a ) |
| { write( a.read() ); return *this; } |
| |
| virtual const char* kind() const |
| { return "sc_signal_rv"; } |
| |
| protected: |
| |
| virtual void update(); |
| |
| protected: |
| |
| std::vector<sc_process_b*> m_proc_vec; // processes writing this signal |
| std::vector<data_type*> m_val_vec; // new values written this signal |
| |
| private: |
| |
| // disabled |
| sc_signal_rv( const this_type& ); |
| }; |
| |
| |
| // IIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII |
| |
| |
| // destructor |
| |
| template <int W> |
| inline |
| sc_signal_rv<W>::~sc_signal_rv() |
| { |
| for( int i = m_val_vec.size() - 1; i >= 0; -- i ) { |
| delete m_val_vec[i]; |
| } |
| } |
| |
| |
| // write the new value |
| |
| template <int W> |
| inline |
| void |
| sc_signal_rv<W>::write( const data_type& value_ ) |
| { |
| sc_process_b* cur_proc = sc_get_current_process_b(); |
| |
| bool value_changed = false; |
| bool found = false; |
| |
| for( int i = m_proc_vec.size() - 1; i >= 0; -- i ) { |
| if( cur_proc == m_proc_vec[i] ) { |
| if( value_ != *m_val_vec[i] ) { |
| *m_val_vec[i] = value_; |
| value_changed = true; |
| } |
| found = true; |
| break; |
| } |
| } |
| |
| if( ! found ) { |
| m_proc_vec.push_back( cur_proc ); |
| m_val_vec.push_back( new data_type( value_ ) ); |
| value_changed = true; |
| } |
| |
| if( value_changed ) { |
| this->request_update(); |
| } |
| } |
| |
| |
| template <int W> |
| inline |
| void |
| sc_signal_rv<W>::update() |
| { |
| sc_lv_resolve<W>::resolve( this->m_new_val, m_val_vec ); |
| base_type::update(); |
| } |
| |
| } // namespace sc_core |
| |
| //$Log: sc_signal_rv.h,v $ |
| //Revision 1.4 2011/08/26 20:45:44 acg |
| // Andy Goodrich: moved the modification log to the end of the file to |
| // eliminate source line number skew when check-ins are done. |
| // |
| //Revision 1.3 2011/04/19 02:36:26 acg |
| // Philipp A. Hartmann: new aysnc_update and mutex support. |
| // |
| //Revision 1.2 2011/02/18 20:23:45 acg |
| // Andy Goodrich: Copyright update. |
| // |
| //Revision 1.1.1.1 2006/12/15 20:20:04 acg |
| //SystemC 2.3 |
| // |
| //Revision 1.3 2006/03/21 00:00:27 acg |
| // Andy Goodrich: changed name of sc_get_current_process_base() to be |
| // sc_get_current_process_b() since its returning an sc_process_b instance. |
| // |
| //Revision 1.2 2006/01/03 23:18:26 acg |
| //Changed copyright to include 2006. |
| // |
| //Revision 1.1.1.1 2005/12/19 23:16:43 acg |
| //First check in of SystemC 2.1 into its own archive. |
| // |
| //Revision 1.10 2005/09/15 23:01:52 acg |
| //Added std:: prefix to appropriate methods and types to get around |
| //issues with the Edison Front End. |
| // |
| //Revision 1.9 2005/06/10 22:43:55 acg |
| //Added CVS change log annotation. |
| // |
| |
| #endif |
| |
| // Taf! |